A patent filing for the process reveals that Apple wants to provide a more secure method for preventing unauthorized access to a whole device—or private information on that device—than current techniques like passcodes; however, it also wants to avoid taking up the owner’s time with a separate scan or consuming extra space with a distinct reader.
The solution, the company suggests, would be to automatically use a sensor either hidden within the device or else repurposed from its usual role. Devices could recognize a fingerprint or finger vein pattern simply by waiting for the user to touch the display, which would hide the sensors on or behind the screen. A forward-facing camera could alternately look for retinal patterns or even recognize the facial features of owners when they’re in the right position for use.
Notebooks could use the trackpad, palmrest and a webcam for a similar purpose.
Apple goes so far as to suggest the possibility of recognizing the user’s distinctive voice or even collecting DNA samples to recognize a user’s genetic sequence. Biometrics could also be context-sensitive and detect the shape of a user’s ear before allowing a call to go through, for example.